let fn_index = async (ctx, next) => {
  ctx.response.body = `<h1>Index</h1>
  <form action="/signin" method="post">
      <p>Name: <input name="name" value="koa"></p>
      <p>Password: <input name="password" type="password"></p>
      <p><input type="submit" value="Submit"></p>
  </form>`;
};

let fn_signin = async (ctx, next) => {
  let name = ctx.request.body.name || '',
    password = ctx.request.body.password || '';
  console.log(`signin with name: ${name}, password: ${password}`);
  if (name === 'koa' && password === '12345') {
    ctx.response.body = `<h1>Welcome, ${name}!</h1>`;
  } else {
    ctx.response.body = `<h1>Login failed!</h1>
      <p><a href="/">Try again</a></p>`;
  }
};

module.exports = {
  'GET /': fn_index,
  'POST /signin': fn_signin
};
